Cancelling ARM deployments in Topaz — what it means for an emulator
· 5 min read
Cancelling an in-progress deployment is one of those ARM operations that looks simple from the outside — you POST to a /cancel endpoint and the deployment stops. Under the hood, what "stop" means depends entirely on whether the engine executing the deployment can be interrupted mid-flight. In a real emulator, that question has a more nuanced answer than in the real Azure control plane.
This post walks through how Topaz implements POST .../deployments/{name}/cancel, what constraints the orchestrator model imposes, and where the emulation intentionally diverges from Azure's behaviour.